摘要
采用非等温DSC研究了纳米二氧化钛改性环氧树脂体系(EP)的固化动力学,采用Flynn-Wall-Ozawa和Vyazovkin非线性等转化率方法(NLV)法分析了固化活化能与转化率的关系,利用Kissinger和Crane方程研究了固化动力学参数,根据不同升温速率下DSC固化反应曲线确定了固化工艺参数。结果表明,纳米二氧化钛促进了环氧树脂的固化,降低了固化反应的活化能,但没有改变环氧树脂的固化机理。
The curing kinetics of nano-TiO2 modified epoxy systems were investigated by nonisothermal differential scanning calorimetry（DSC）.The relationship between activation energy and conversion rate of the curing reaction was studied by using the methods of Flynn-Wall-Ozawa and nonlinear Vyazovkin method（NLV）and the kinetics parameters were obtained by using Kissinger and Crane equation.The curing parameters of epoxy resin were determined by DSC curves at different heating rates.The results showed that nano-TiO2 could promote the curing reaction of epoxy resin,and decrease the activation energy,but did not change the curing reaction mechanism.
出处
《热固性树脂》
CAS
CSCD
北大核心
2012年第6期11-14,共4页
Thermosetting Resin
